.content {
    width: 640px;
    height: 640px;
    margin: 50px auto 0px auto;
    position: relative;
}

.btn {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    background-color: rgba(0, 0, 0, 0.3);
    z-index: 2;
}

.btn button {
    background: none;
    border: none;
    background-size: 100% 100%;
    cursor: pointer;
    outline: none;
    position: absolute;
    left: 50%;
    top: 50%;
}

.startBtn button {
    width: 200px;
    height: 80px;
    background-image: url(../images/startGame.png);
    margin-left: -100px;
    margin-top: -40px;
}

.pauseBtn {
    display: none;
}

.pauseBtn button {
    width: 70px;
    height: 70px;
    background-image: url(../images/start.png);
    margin-left: -35px;
    margin-top: -35px;
}

/*snakeWrap*/

#snakeWrap {
    width: 600px;
    height: 600px;
    background-color: #225675;
    border: 20px solid #7dd9ff;
    position: relative;
}

/* #snakeWrap div {
    width: 20px;
    height: 20px;
} */

.snakeHead {
    background-image: url(../images/snake.png);
    background-size: cover;
}

.snakeBody {
    background-color: #9ddbb1;
    border-radius: 50%;
}

.food {
    background-image: url(../images/food.png);
    background-size: cover;
}
